Safety razor



AWM W31@ DIXON ETAL SAFETY RAZOR Filed March 30, 1935 2 Sheets-Sheeb l plr' 75, l@ C, DIXON ET AL @@369927 SAFETY RAZOR Filed March 3o, 1935v 2 Sheets-Sheet 2 5 surfaces in the act of dravving the razor across faces 4, said surfaces being separated'byacen-- 5 x consists of a safety razor or" the type specified 1` aslto yiitgbetvveen theatoresaid friction roller. "20 in which the friction roller'is supported bythe supporting lugs lfand the sidesjof` the channel 20 "25 ment the blade is either supported bythe upper the side members` I0' are parallel throughout 25 `30 cording to both such embodiments` `will now' be -materi'al for` the rollersupporting-` lugs l dhd30 I35. Fig52 is a composite perspective View showing lalgedheadlw as 511163113 AOVIiIClldillllg the "'45" Fig. "5 is a` perspective View, with v'the cover the 5941110150 `l'f'ClOSelY OVe'flhellDSaldlg .VeI- 45 5o Fig 6 is,V a perspective view showingfan alter- 'the extremities of saidextendedends andintlie 50 '55 extending laterally from oppositesides *of the yreduced in WidthA as4 shown in Fig. 2 tdprovide 55 Patented Apr. 7, 1936 Charles Dixon and Harold Julian Wilberforce Y Raphael, London, England Applicafdcn ivrzdfchr 30, 1935. serial Nc. 13,962 InGreat Britain February 15, 1935 r11 claims. (c1. `:ao-4.6)

This invention relates to `safety razors of the channel, the Wholebeing formed from az'single reciprocatory blade type in which the `movesheet of metal. i ment is imparted tothe blade/'through the rne- A single friction roller 3 is employed having a `dium of a friction roller vand associated cam pair of knurled or otherwise roughened surthe skin of the user. trallcam groove 5. This roller [has pintles ,6 One of the objects of the presentinvention is at opposite ends by means of'which the roller to provide an improved razor of theabove type `is mounted to rotate Within bearingsv in a pair in which the usual,` method of Vmounting the of'upstanding lugs 'l carried by fandupset from` 10 friction roller on the cover plate vis dispensed the material Vcomposingthe base' of thechanl0 with. y nel in the xed base I.The 'slidable or re- A further object of the invention is`t`o use in ciprocating member Scis `also of channelsection such improved razor a non-flexed double edged `the same beingV supported uponA the Vbase, of the, `blade having an elongatedl aperture in Vit to `channel byfthe ends of themembers vertical 15 clear the friction roller, the blade being located sidemembers I0 :which are extended for tl1e15 in the razor both longitudinally and vlaterally vpurposebeyond each endfof `the base properV i2. by said aperture. l p Y of 'the reciprocable member. "The eXtendedgends The present invention in its broadest 4aspect of the side members are spacedatsuchalwidth xedbase of the razor. v in the ixed'base *but'slightly' `less-thany the AIn one embodiment of the invention motion "Width ofV the channel' so as to permit the mem- :is limparted to the blade byfa memberfwhich is ber to reciprocate freely Without undu'eflateral slidable on the fixed base. InfsuchanembodL' movement. Inithe' preferred arrangement'shovvn Y.

`faces of the fixed base oris supported `by the their length, so as to provide as long a-v lateral "slidable member. .Y i Nguiding surface as" possible. f l

In order that the invention may "beffclea'ly Beneaththe base 0f the recplocble member yunderstood and carried into'f eiect examplesac- Vthe base ofV the channel is` cut to provide they in whichz- `-1 v l. I lment of a pin I4 extending fromv the underside Fg- 1 is @perspective View 0f a, Complete of thelbaseof lthe reciprocable mer'nberand rdzcrdcccrdmgtc lcahcccfv the embodiments. serving, when formed 1r-provided withari enf the partsgdisassembled and thefriction roller remember Within 'the yClllllnelY I'GCQS'SVK l Whf'll "it Ymoved of airazonaccording 'tof the embcdirnent Works for'which purpose t'engages beneath'the `inzvvlfiichithe blade is adapted tof be supported `lpS ll 011 OPpOSe Sides Of Vthe Slot/i3." 1Reby the Slidablemember; f. f u Y ciprocationis imparted to the reciprocable Inem-` 4c f rig. .3ds d longitudinal sccticnalzvicwcf the lber-bv a drivingfpin I5 whih'exte'nds umards 40 razor according to the' embodiment illustrated from its baseyintoengaeementwthth afdre- -in Fig. 2. 'y d 1 v said cam groove 5i. The blade-i6 orarazor'as f Fig. 4 is a transversesecton on th'ciine 4--4 -JuSt' described is'foimedWi'ha'lcentral Opening `of Fig; 3. ll O Such a length and Widthas'vvill permit -plate removed of a razor accordingto the other tical SideSflU and-in the YStjeXamDleaCIOSS th `@mbcdimcnt in which the leidde is ?suppcrted extended ends 0f the reciprocable member, the by` the upper surfaces `or guards kof the x'e'd S'HDDOI OI'` .the blade being afforded nfSuCll rst base. i p Y p. Y .example -by theup'per Vedges of` out outs I8 4in 'native` construction hereinafterxto'be'des'cribed. second exarnpileyby theupper `races 'ofthe Alat- 'In the razor according to both'embodiments 'erallyv extendingguards 12;.

illustrated thexed basel is of channel section 1 The central opening in a blade for usewin and `providedwith a `pairof safety guards 2-1 connection With therst exarn'pleI has its 'Vends ledges lla which engage within the aforesaid cut outs I8.

The usual hinged o1' otherwise movable cover plate I9 is cut out in the centre with an opening 20 to permit the friction roller to project therethrough when the cover plate is closed. The cover plate is also, if necessary, curved to provide a clearance above the upstanding sides of the reciprocable member and to permit the longitudinal edges thereof to close down in near proximity to the upper surface of a positioned blade.

In the alternative arrangement illustrated in Fig. 6 and applicable to either of the described embodiments, the aperture in the blade is formed with opposing projections 2l which engage in correspondingly shaped and positioned gaps 22 in the upper edges of the vertical side members I0. The engagement between the projections 2| and the gaps 22 ensures correct longitudinal location of the blade without excessive, if any, end play between the blade and the member 9. By suitably lowering the friction roller and increasing the distance inwards to which the projections extend, such projections may be made to engage in the cam groove 5 whereby the blade is directly driven, in which case the member 9 and the driving pin l5 may be dispensed with, the blade being supported directly upon the upper faces of the safety guards.

The depth of a razor constructed according to the present invention and therefore the diameter of the friction roller may be relatively small thereby effecting an increase in the speed at which the blade may be reciprocated without deviating unduly, if at all, from the normal cutting angle at which the razor is held in relation to the surface of the users skin.

Although the razor according to this invention has been described as having a single friction roller with an interposed cam groove, more than one roller and cam groove may be used. Alternatively one or more cam surfaces at the end or ends of the roller or rollers may be employed instead of intermediate cam grooves.

What we claim is:-

l. In a safety razor, in combination, a fixed base of channel section having a laterally extending safety guard on each side thereof, roller supporting means extending upwards from the base of the channel, a friction roller revolubly mounted in said supporting means, said roller having a cam groove intermediate its length, a U-shaped reciprocable carriage slidably support'- ed upon the base of the channel, the upstanding side portions of said carriage extending upwards to above the upper surface of the laterally extending guards, projecting means on said reciprocable carriage engageable with the cam groove in the friction roller, and a cover plate adapted to close down above a positioned blade and provided with an aperture through which the friction roller partially projects when the cover plate is closed.

2. In a safety razor, in combination, a handle, a xed base mounted on said handle, safety guards extending laterally on opposite sides of said fixed base, a friction roller rotatably mounted on said fixed base and having a cam groove intermediate the length thereof, a carriage slidably mounted on said xed base, a pin projecting upwards from said carriage adapted to engage said cam groove, a cover plate adapted to be closed down above the upper surface of the fixed base and a positioned blade, and provided with an aperture through which said friction roller partially projects when said cover plate is in closed position, whereby rotation of the friction roller by rolling contact with the skin of the user imparts a reciprocatory motion to the carriage and through said carriage to said positioned blade.

3. In a safety razor, in combination, a handle, a fixed base mounted on said handle, safety guards extending laterally on opposite sides of said fixed base, a friction roller rotatably mounted on said fixed base and having a cam groove intermediate the length thereof, a carriage slidably mounted on said fixed base beneath said friction roller, blade supporting surfaces on said carriage, a positioned blade supported by said supporting surfaces above the upper surface of the safety guards, a pin projecting upwards from said carriage engaging said cam groove, a cover plate, adapted to be closed down above the upper surface of said fixed base and said positioned blade, having an aperture therethrough through which said friction roller partially projects when said cover plate is in the closed position, whereby rotation of said friction roller by rolling contact with the skin of the user imparts a reciprocatory motion to the carriage and hence to said positioned blade.

4. A safety razor of the reciprocating blade type comprising, in combination, a blade supporting carriage, side members upstanding from said carriage, said side members having cut away portions at the extremities thereof, and a blade having an aperture therethrough, said upstanding side members adapted to project through said aperture and to form supporting surfaces for said blade thereby to prevent lateral movement of said blade.

5. In a safety razor of the reciprocating blade type, in combination, a fixed base, a friction roller having a cam groove therein mounted on said base, a reciprocable carriage slidably mounted on said xed base, a blade supported by said carriage, said carriage being supported beneath said friction roller, a pin on said carriage, and means to reciprocate said blade, said means comprising the engagement of said pin with said cam groove.

6. In a safety razor, in combination, a handle, a fixed base of channel section mounted on said handle, safety guards extending laterally on opposite sides of said fixed base, spaced bearing supports projecting upwards from the base of said channel, a friction roller having a cam groove mounted between and supported at each end in said spaced bearing supports, a blade supporting carriage mounted within said fixed base channel on a surface located below said roller, surfaces on said carriage for supporting a blade above the upper surface of the laterally extending safety guards and for longitudinally locating the same, side members on said carriage for laterally locating said blade, a pin projecting upwards from said carriage for engagement with said cam groove in the friction roller and for imparting a reciprocating movement to the carriage in consequence of rotation of the friction roller, and a cover plate closable down above the upper surface of a positioned blade and engageable, when closed, with said fixed base.

'7. In a safety razor of the reciprocating blade type, a blade supporting and blade locating carriage comprising vertically and longitudinally extending side members having cutouts at each end to form seatings for a positioned slotted blade below the level of the upper edges of the side members, said cutouts and said side members coacting with the slot in the blade to hold the same against longitudinal and lateral displacement, respectively.

8. A safety razor of the reciprocating blade type comprising, in combination, a xed base of channel section, safety guards extending laterally on opposite sides of said channel, a carriage slidably mounted within said channel and on the base thereof for engaging and reciprocating a non-flexed blade, a friction roller mounted on the base of said channel on supports located within an opening in said carriage and a positioned blade, and means forming a driving connection between said cam roller and said carriage.

9. A safety razor of the reciprocating blade type comprising, in combination, a fixed base of channel section, safety guards extending laterally on opposite sides of said channel, a carriage slidably mounted within said channel and on the base thereof for engaging and reciprocating a non-flexed blade, a friction roller mounted on the base of said channel on supports located within an opening in said carriage and a positioned blade, means forming a driving connection between said cam roller and said carriage, and a cover plate closable down above the upper surface of a positioned blade and engageable, when closed, with said fixed base.

10. A safety razor of the reciprocating blade type comprising, in combination, a fixed base of channel section, safety guards extending laterally on opposite sides of said channel, a blade reciprocating carriage located Within said channel and slidably supported upon the base thereof, side members extending upwards from said carriage and longitudinally of said channel so as to project through a correspondingly shaped aperture in a positioned non-ilexed blade, a friction driven cam roller mounted upon the base of said channel on supports disposed between the upstanding sides of the carriage, means forming an operative driving connection between said cam roller and said carriage and a cover plate closable down above the upper surface of a positioned blade, coacting means for holding said cover plate in the closed position, and an aperture in said cover plate to permit of the partial projection therethrough of the friction cam roller when said cover plate is closed.

11. A safety razor of the reciprocating blade type comprising, in combination, a xed base of channel section, safety guards extending laterally on opposite sides of said channel, a carriage slidably mounted upon the base of said channel, a pair of upstanding longitudinal side members forming part of said carriage, a friction driven cam roller mounted on supports located between said side members and extending from the base of said channel, a flat unilexed blade of greater width than the channel and having an aperture in it to lit over said upstanding side members to form a driving connection between the blade and the carriage, means forming an operative driving connection between said cam roller and said carriage, and a blade retaining cover plate, closable down above a positioned blade and apertured to permit of the partial projection therethrough of the friction driven cam roller when Said cover plate is closed.

CHARLES DIXON. HAROLD JULIAN WILBERFORCE RAPHAEL. 

